Hello, I was a TradeStation automated trader turned manual last year and I would like to give another try at automation with different ideas. What I would like is a trading dedicated environment that can handle : - IB feed and broker - real time bid/asks and B/A sizes from IB feed and programming - stable automation to do numerous cancel/replace limit orders per minutes. Speed isn't crucial but it would be better. I don't want to reinvent the wheel but all I know trading wise is TS EL, AmiBroker AFL and Excel VBA. I don't want to use excel for this 'cause I think it's not stable enough, and TS cannot hadle B/A quotes. I can learn a new language and don't want to reinvent the wheel. I have looked at open source softs like active quant... But what would be the best option for my needs? Thanks.